Kelly
If your are using metal base molds and you are referring to paraffin blocks, all
you have to do is cool down really well before attempting to remove the block
from the mold. Paraplast is also better than ordinary paraffin wax as it is less
brittle. In fact we do not coat ours at all, we just keep them warm to melt off
excess wax and wipe.
Another hint is to really fill up the mold with the molten wax so that when the
cassette is placed on top, the wax flows through the holes and fills up the
cassette as well. In this way you don't get air bubbles trapped under the
cassette. In case you still do just tap lightly to dislodge them.
That's all I can think of at the moment. Good luck.
Carmen
St.Luke's Hospital
Malta